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Jurnal Maritim Polimarin
Published by Politeknik Maritim Negeri Indonesia
ISSN : -     EISSN : 25409158     DOI : https://doi.org/10.52492/jmp
Core Subject : Economy, Science, Education, Social, Engineering,
Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Transportation
Jurnal Maritim Polimarin adalah jurnal ilmiah dan penelitian ilmu - ilmu maritim yang berisi tentang kajian ilmu kenautikaan, permesinan kapal, pengelolaan pelabuhan, ekonomi maritim, MIPA maritim, hukum maritim, pendidikan maritim, maritime english dan ilmu-ilmu ilmiah lain yang berkaitan dengan kemaritiman.
Arjuna Subject : Umum - Umum
Articles 95 Documents
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Analisa Pengaruh Main Pressure Tank Cellar dalam Proses Discharge Semen di MV. Cepat Hidayat, Ihsan; Anwar, Amthori; Noviarianto, Noviarianto
Jurnal Maritim Polimarin Vol. 10 No. 2 (2024)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v10i2.124

Abstract

Discharge activities on a cement vessel can’t be separated from the discharge pneumatic system, because the bulk cement contained in the cellar tank must be pressurized so that the cement turns into dust and can be unloaded into the land sillo. Failure of the pneumatic system will pose a risk of time delays and losses for the company because it can’t carry out load discharge activities. When the cement discharge activity takes place, there are many problems with the pneumatic system due to the decrease in wind pressure. The purpose of this study was to determine the factors, impacts and efforts made to analyze the effect of main pressure on the cellar tank in the cement discharge process to reduce the risk of delays in cement discharge activities. This study used descriptive qualitative method. Where is described and explained each problem with a detailed explanation. Data collection techniques with the method of observation, interviews with the chief officer and supported by the method of documentation. Damage to the pneumatic valve system causes reduced pressure in the cellar tank to be a factor in the decrease in main pressure. The impact of decreasing main pressure causes cement discharge activities to not be carried out optimally and can even hinder cement discharge activities. The conclusion obtained is that efforts need to be made to improve the skills of the crew on the operation of the pneumatic system and control, routines for the maintenance of the pneumatic system equipment according to the system maintenance plan.
Pengaruh Sistem Aplikasi Berbasis Web Etos Terhadap Kinerja Karyawan Operasional Dalam Kegiatan Bongkar Muat pada PT. Prima Nur Panurjwan Panjaitan, Frengky; Widilestari, Christine; Retian Asfirah, Lia
Jurnal Maritim Polimarin Vol. 10 No. 2 (2024)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v10i2.125

Abstract

Loading and unloading operations include the transportation of goods using land transportation. To carry out these freight transportation activities, the method or service procedure requires the availability of appropriate facilities or equipment. Effective and efficient employee performance is needed by a company because that will advance a company. Employees are expected to work more effectively, with easier access to the information needed, and better coordination between teams. This study aims to discuss the effect of the Electronic Terminal Operation System (ETOS) application system on the performance of operational employees in loading and unloading activities at PT Prima Nur Panurjwan and find out employee perceptions of the ETOS application system affecting the performance of operational employees in loading and unloading activities. This research uses quantitative methods, with questionnaire and observation data collection techniques and data analysis patterns using instrument tests, classical assumption tests, simple regression analysis, determination tests, and t tests. The results of this study validate the research hypothesis that there is a significant influence between the ETOS application system on employee performance at PT Prima Nur Panurjwan.
Pengaruh Vessel Leadership Training Terhadap Key Performance Indicator (KPI) Kapal di PT. Pelayaran Nasional Ekalya Purnamasari Tbk Dyah Pasha Pradhani, Novia; Dwi Retnandari, Septina; Retian Asfirah, Lia
Jurnal Maritim Polimarin Vol. 10 No. 2 (2024)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v10i2.126

Abstract

Effective human resource management is the main key to achieving optimal company performance. PT. Pelayaran Nasional Ekalya Purnamasari Tbk has implemented the Vessel Leadership Training program as one of the strategic initiatives to improve the ship's Key Performance Indicators (KPIs). The research started from a problem in the form of low KPIs that proved the low service to customers. This aims to examine the influence of leadership training on ship KPIs at PT. This study uses a quantitative method with 45 respondents consisting of the top three crew members (Master, Chief Engineer, and Chief Officer) who have participated in the training program. Data were collected through questionnaires and data analysis was carried out with a simple linear regression test to measure the influence between independent variables and dependent variables. The results of the study show that Vessel Leadership Training has a positive and significant influence on ship KPIs. The training has been proven to improve the operational performance of ships in terms of timeliness, shipping safety, regulatory compliance, and smooth operations. The suggestion for further research is to further examine other factors that may affect the effectiveness of leadership training, as well as evaluate the long-term impact of such training on ship performance.
Analisis Kondisi Pompa Sentrifugal Berdasarkan Getaran Untuk Mencegah Kegagalan Pompa di Kilang Migas Cepu Fitrian, Ahmad Bagus; Kundori, Kundori
Jurnal Maritim Polimarin Vol. 11 No. 1 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i1.127

Abstract

Centrifugal pumps at the PPSDM Migas Refinery play a crucial role in the continuous fluid transfer process. However, these components are prone to various problems, such as misalignment, bearing wear, and imbalance, which can cause serious damage to production downtime. This research aims to analyze the condition of the P100/3 centrifugal pump with a vibration data-based monitoring method. Measurements were taken using a vibration meter with reference to the International Organization for Standardization (ISO) 10816-3 standard on machine classification. Vibration data was collected from three main axes (axial, horizontal, and overhang) for four days to obtain the vibration pattern overhang as well as an indication of potential failures. The measurement results showed that at Non-Drive End (NDE) point 1, the average vibration reached 7.15 mm/s, which is included in zone D (danger), so immediate maintenance is required. Meanwhile, the Drive End (DE) 2, DE 3, and NDE 4 points are in zone B, which is still in the safe category, but still requires regular monitoring. In addition, temperature analysis showed an increase in motor and pump temperatures from August 12 to 16, which although still within reasonable limits, could potentially lead to overheating if not anticipated. Based on these findings, it is concluded that pump P100/3 requires immediate maintenance at point NDE 1, while pump P100/1 is still in a safe condition. Continued maintenance and monitoring recommendations are provided to prevent further potential damage and ensure optimal operational sustainability of the refinery
Analisis Efektivitas Proses Evakuasi Kebakaran di Kapal MT. Elisabet Satu Ambarsari, Evrilia; Suprapti, Fitri; Nindita, Kirtyana; Kumara, Rahindra Bayu
Jurnal Maritim Polimarin Vol. 11 No. 1 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i1.130

Abstract

Fire on a tanker can cause financial, human, and environmental losses if it is not handled effectively. This research aimed to find out the actions of the captain when conducting an evacuation, to determine the factors inhibiting the evacuation process, and to analyze the effectiveness of the fire evacuation process on MT. Elisabet Satu. This research used qualitative method combined with the root cause analysis (RCA) and fishbone diagram. This research used observation, interviews, documentation, and literature studies to collect the data. The object of this research was the fire evacuation process on MT. Elisabet Satu. The results of this research indicated that the captain had followed the evacuation procedures when conducting the fire evacuation on MT. Elisabet Satu. In addition, there were five main factors that inhibited the evacuation process when a fire occured on MT. Elisabet Satu. However, even though the evacuation procedures had been carried out properly, the evacuation process could not be fully declared effective based on the Risk-Based Evaluation in ISM Code.
Optimalisasi Produksi Air Tawar: Identifikasi dan Efisiensi pada Reverse Osmosis Plant di MV Golden Splendor Iqbal Alansyah, Fardian; Oscar, Yulius; Noviarianto, Noviarianto; Nuriyanis, Akhmad
Jurnal Maritim Polimarin Vol. 11 No. 1 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i1.132

Abstract

The Reverse Osmosis Plant (RO) is a critical system for supplying freshwater on board ships to meet accommodation and operational needs. This study aims to identify the causes of reduced freshwater production in the RO Plant aboard the MT. Golden Splendor and to propose optimization strategies. A qualitative approach was employed through direct observation, interviews with engineering officers, and analysis of logbook data collected during a 12-month sea training period. The findings indicate that the main causes of inefficiency include clogged filters and membranes, leakage in the ejector pump, and inadequate routine maintenance. These issues led to a decline in freshwater production from 1000 liters/hour to 700 liters/hour. After corrective measures such as filter replacement, membrane cleaning, and pump repairs were implemented, production increased back to 1000 liters/hour. The results highlight the importance of scheduled maintenance and system monitoring to ensure optimal RO performance. The study recommends strict adherence to maintenance procedures and enhanced system supervision to improve efficiency and ensure the sustainability of freshwater production on board.
Action Base Learning Pendidikan Kewirausahaan Mahasiswa Maritim Retnandari, Septina Dwi
Jurnal Maritim Polimarin Vol. 11 No. 1 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i1.134

Abstract

This study aims to examine the influence of entrepreneurial spirit and selling practices on the business motivation of maritime students. The background of this study is based on the low motivation of students to become entrepreneurs due to limited practical experience and the lack of internalization of entrepreneurial values in maritime education. The study used a quantitative approach, with 65 students in the maritime education study program in Semarang City as respondents. Data collection was conducted using a closed-ended questionnaire, and data analysis used simple and multiple linear regression with the help of SPSS version 26. The results showed that entrepreneurial spirit significantly influenced selling practices (R² = 84.2%) and business motivation (R² = 84.2%). Furthermore, selling practices also significantly influenced business motivation (R² = 65.7%). Multiple regression showed that entrepreneurial spirit (β = 0.640) and selling practices (β = 0.101) simultaneously contributed to business motivation with a strong correlation (R = 0.747). These findings emphasize the importance of an action-based learning approach in entrepreneurship education to improve the entrepreneurial readiness and spirit of maritime students.
Analisis Rasio Kompresi AC Split R32 yang Diretrofit R290 di Ruang Akomodasi Kapal Ulum, Rizka Noor Miftakhul; Sekti, Irsat Surya; Noviarianto, Noviarianto; Nugroho, Anang Budhi; Supardi, Supardi
Jurnal Maritim Polimarin Vol. 11 No. 1 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i1.136

Abstract

Air conditioning (AC) systems play a crucial role in maintaining thermal comfort within ship accommodation spaces, especially during operations in tropical climates. However, the use of refrigerants such as R32 raises environmental concerns due to its relatively high Global Warming Potential (GWP). This study aims to analyze the impact of retrofitting 40% by mass of R290 into a 1-HP split AC system originally designed for R32, focusing on the resulting compression ratio and cooling performance. The experimental method involved varying the inlet air temperatures to the evaporator (23°C, 25°C, and 27°C) and condenser (30°C and 35°C). Suction and discharge pressures of the compressor were measured to calculate the compression ratio. The results showed that R32 yielded the highest compression ratio of 3.09 and the lowest at 2.87, while R290 produced a maximum of 2.86 and a minimum of 2.60. These differences reflect the influence of each refrigerant’s thermodynamic properties on compressor operation. R290 demonstrates potential as an environmentally friendly alternative for marine air conditioning systems, although technical adjustments are required to maintain optimal system performance.
Optimalisasi Peralatan Inert Gas System untuk Pencegahan Terjadinya Ledakan Pada Tangki Minyak di Kapal Tanker Khaeroman, Khaeroman; Noviarianto, Noviarianto; Ridwan, Ridwan
Jurnal Maritim Polimarin Vol. 11 No. 2 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i2.131

Abstract

Oil tankers are a type of vessel specifically designed to transport oil or its derivatives. One of the preventive safety measures employed on these ships is the inert gas system—a system that generates gas with low oxygen content to prevent explosions onboard. However, an increase in oxygen concentration in the inert gas is a common issue encountered, which makes optimizing the performance of the inert gas system a matter of serious concern. The methodology adopted in this research is descriptive qualitative, with the inert gas system aboard MT. NORDDOLPHIN serving as the primary research object. Data collection was carried out through several approaches, including direct field observation, interviews with relevant personnel, and a literature review of technical documents such as instruction manuals and standard operating procedures (SOP) available on the vessel. The study demonstrates that the rise in oxygen content in inert gas is caused by inadequate maintenance of the fuel oil control valve and a dirty main burner, which leads to an imbalance in the combustion ratio. The effort undertaken to keep the oxygen level below the threshold of 4% involves lowering the correction factor on the boiler. This adjustment increases the fuel supply during combustion, which in turn raises the carbon dioxide concentration and lowers the oxygen level in the inert gas
Analisis Prosedur Pemuatan Jumbo Bag di KM. Royal Glory Bayuseto , Muhammad; Anwar, Amthori; Suprapti, Fitri; Sutantyo, Erwin
Jurnal Maritim Polimarin Vol. 11 No. 2 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i2.140

Abstract

The optimization of cargo loading processes plays a crucial role in maritime logistics operations. This study is focused on examining jumbo bag loading procedures aboard MV Royal Glory, identifying various influencing factors, and establishing management methods for damaged jumbo bags. Using a qualitative-descriptive approach, data was collected through field observations, in-depth interviews, and documentation during sea practice. Research findings show that while loading procedures are systematically structured, their effectiveness remains limited as they rely on manual calculations and crew expertise without technological support. Three primary constraints identified include human resources, equipment and facilities, and cargo materials. Although measures for handling damaged jumbo bags have been implemented, preventive actions have not yet been adopted. This situation leads to reduced operational time efficiency and heightened occupational safety risks.

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